Wrong. People can opt to pay the tax until they get sick and need tons of medical care. Like waiting until the car accident to take out a policy with GEICO. That leads to astronomical increases.2. Coverage of pre-existings. I think this would be a rather small increase as well.
Correct that it will raise costs, wrong that it will be offset. A minimal number of conditions caught preventatively save money overall when you consider the aggregate number of folks getting screened/tested. Especially when outpatient clinic care in the US is already more than twice as expensive as the next most expensive country.3. 100% coverage of preventative care. I think this will be a wash (cost to insurance company will be offset by lower costs down the road).
Overall, you must agree that calling this the "Affordable Care Act" is an enormous deception.